Job Duties Custom List 51-4041.00 — Machinists
- Diagnose machine tool malfunctions to determine need for adjustments or repairs.
Occupations with related tasks Save Table: XLSX CSV
- Troubleshoot, maintain, and make minor repairs to equipment.
- Measure and examine extruded products to locate defects and to check for conformance to specifications, adjusting controls as necessary to alter products.
- Determine setup procedures and select machine dies and parts, according to specifications.
- Start machines and set controls to regulate vacuum, air pressure, sizing rings, and temperature, and to synchronize speed of extrusion.
- Reel extruded products into rolls of specified lengths and weights.
- Install dies, machine screws, and sizing rings on machines that extrude thermoplastic or metal materials.
- Change dies on extruding machines, according to production line changes.
- Clean work areas.
- Weigh and mix pelletized, granular, or powdered thermoplastic materials and coloring pigments.
- Test physical properties of products with testing devices such as acid-bath testers, burst testers, and impact testers.
- Load machine hoppers with mixed materials, using augers, or stuff rolls of plastic dough into machine cylinders.
- Maintain an inventory of materials.
- Adjust controls to draw or press metal into specified shapes and diameters.
- Replace worn dies when products vary from specifications.
- Select nozzles, spacers, and wire guides, according to diameters and lengths of rods.
- Operate shearing mechanisms to cut rods to specified lengths.
- Troubleshoot, maintain, and make minor repairs to equipment.
- Determine causes of abnormal pressure variances, and make corrective recommendations, such as installation of pipes to relieve overloading.
- Monitor equipment functioning, observe temperature, level, and flow gauges, and perform regular unit checks to ensure that all equipment is operating as it should.
- Distribute or process gas for utility companies or industrial plants, using panel boards, control boards, and semi-automatic equipment.
- Control operation of compressors, scrubbers, evaporators, and refrigeration equipment to liquefy, compress, or regasify natural gas.
- Control equipment to regulate flow and pressure of gas to feedlines of boilers, furnaces, and related steam-generating or heating equipment.
- Record, review, and compile operations records, test results, and gauge readings such as temperatures, pressures, concentrations, and flows.
- Adjust temperature, pressure, vacuum, level, flow rate, or transfer of gas to maintain processes at required levels or to correct problems.
- Collaborate with other operators to solve unit problems.
- Monitor transportation and storage of flammable and other potentially dangerous products to ensure that safety guidelines are followed.
- Start and shut down plant equipment.
- Read logsheets to determine product demand and disposition, or to detect malfunctions.
- Contact maintenance crews when necessary.
- Test gas, chemicals, and air during processing to assess factors such as purity and moisture content, and to detect quality problems or gas or chemical leaks.
- Clean, maintain, and repair equipment, using hand tools, or request that repair and maintenance work be performed.
- Signal or direct workers who tend auxiliary equipment.
- Control fractioning columns, compressors, purifying towers, heat exchangers, and related equipment to extract nitrogen and oxygen from air.
- Calculate gas ratios to detect deviations from specifications, using testing apparatus.
- Operate construction equipment to install and maintain gas distribution systems.
- Change charts in recording meters.
- Determine causes of abnormal pressure variances, and make corrective recommendations, such as installation of pipes to relieve overloading.
- Operate equipment to demonstrate proper use or to analyze malfunctions.
- Test faulty equipment to diagnose malfunctions, using test equipment or software, and applying knowledge of the functional operation of electronic units and systems.
- Maintain equipment logs that record performance problems, repairs, calibrations, or tests.
- Set up and test industrial equipment to ensure that it functions properly.
- Inspect components of industrial equipment for accurate assembly and installation or for defects, such as loose connections or frayed wires.
- Install repaired equipment in various settings, such as industrial or military establishments.
- Enter information into computer to copy program or to draw, modify, or store schematics, applying knowledge of software package used.
- Perform scheduled preventive maintenance tasks, such as checking, cleaning, or repairing equipment, to detect and prevent problems.
- Calibrate testing instruments and installed or repaired equipment to prescribed specifications.
- Repair or adjust equipment, machines, or defective components, replacing worn parts, such as gaskets or seals in watertight electrical equipment.
- Consult with customers, supervisors, or engineers to plan layout of equipment or to resolve problems in system operation or maintenance.
- Maintain inventory of spare parts.
- Study blueprints, schematics, manuals, or other specifications to determine installation procedures.
- Examine work orders and converse with equipment operators to detect equipment problems and to ascertain whether mechanical or human errors contributed to the problems.
- Coordinate efforts with other workers involved in installing or maintaining equipment or components.
- Develop or modify industrial electronic devices, circuits, or equipment, according to available specifications.
- Determine feasibility of using standardized equipment or develop specifications for equipment required to perform additional functions.
- Advise management regarding customer satisfaction, product performance, or suggestions for product improvements.
- Send defective units to the manufacturer or to a specialized repair shop for repair.
- Sign overhaul documents for equipment replaced or repaired.
- Operate equipment to demonstrate proper use or to analyze malfunctions.
- Respond to system or unit abnormalities, diagnosing the cause, and recommending or taking corrective action.
- Operate nuclear power reactors in accordance with policies and procedures to protect workers from radiation and to ensure environmental safety.
- Adjust controls to position rod and to regulate flux level, reactor period, coolant temperature, or rate of power flow, following standard procedures.
- Develop or implement actions such as lockouts, tagouts, or clearances to allow equipment to be safely repaired.
- Monitor all systems for normal running conditions, performing activities such as checking gauges to assess output or the effects of generator loading on other equipment.
- Monitor or operate boilers, turbines, wells, or auxiliary power plant equipment.
- Record operating data, such as the results of surveillance tests.
- Implement operational procedures, such as those controlling start-up or shut-down activities.
- Note malfunctions of equipment, instruments, or controls and report these conditions to supervisors.
- Participate in nuclear fuel element handling activities, such as preparation, transfer, loading, or unloading.
- Dispatch orders or instructions to personnel through radiotelephone or intercommunication systems to coordinate auxiliary equipment operation.
- Review and edit standard operating procedures.
- Conduct inspections or operations outside of control rooms as necessary.
- Direct reactor operators in emergency situations, in accordance with emergency operating procedures.
- Authorize maintenance activities on units or changes in equipment or system operational status.
- Supervise technicians' work activities to ensure that equipment is operated in accordance with policies and procedures that protect workers from radiation and ensure environmental safety.
- Authorize actions to correct identified operational inefficiencies or hazards so that operating efficiency is maximized and potential environmental issues are minimized.
- Direct the collection and testing of air, water, gas, or solid samples to determine radioactivity levels or to ensure appropriate radioactive containment.
- Direct measurement of the intensity or types of radiation in work areas, equipment, or materials.
- Identify or direct implementation of appropriate decontamination procedures, based on equipment and the size, nature, and type of contamination.
- Respond to system or unit abnormalities, diagnosing the cause, and recommending or taking corrective action.
- Identify or address malfunctions of hydroelectric plant operational equipment, such as generators, transformers, or turbines.
- Operate high voltage switches or related devices in hydropower stations.
- Inspect water-powered electric generators or auxiliary equipment in hydroelectric plants to verify proper operation or to determine maintenance or repair needs.
- Implement load or switching orders in hydroelectric plants, in accordance with specifications or instructions.
- Start, adjust, or stop generating units, operating valves, gates, or auxiliary equipment in hydroelectric power generating plants.
- Perform preventive or corrective containment or cleanup measures in hydroelectric plants to prevent environmental contamination.
- Maintain or repair hydroelectric plant electrical, mechanical, or electronic equipment, such as motors, transformers, voltage regulators, generators, relays, battery systems, air compressors, sump pumps, gates, or valves.
- Operate hydroelectric plant equipment, such as turbines, pumps, valves, gates, fans, electric control boards, or battery banks.
- Communicate status of hydroelectric operating equipment to dispatchers or supervisors.
- Monitor hydroelectric power plant equipment operation and performance, adjusting to performance specifications, as necessary.
- Take readings and record data, such as water levels, temperatures, or flow rates.
- Install or calibrate electrical or mechanical equipment, such as motors, engines, switchboards, relays, switch gears, meters, pumps, hydraulics, or flood channels.
- Lift and move loads, using cranes, hoists, and rigging, to install or repair hydroelectric system equipment or infrastructure.
- Maintain logs, reports, work requests, or other records of work performed in hydroelectric plants.
- Change oil, hydraulic fluid, or other lubricants to maintain condition of hydroelectric plant equipment.
- Perform tunnel or field inspections of hydroelectric plant facilities or resources.
- Connect metal parts or components in hydroelectric plants by welding, soldering, riveting, tapping, bolting, bonding, or screwing.
- Erect scaffolds, platforms, or hoisting frames to access hydroelectric plant machinery or infrastructure for repair or replacement.
- Cut, bend, or shape metal for applications in hydroelectric plants, using equipment such as hydraulic benders or pipe threaders.
- Splice or terminate cables or electrical wiring in hydroelectric plants.
- Test and repair or replace electrical equipment, such as circuit breakers, station batteries, cable trays, conduits, or control devices.
- Identify or address malfunctions of hydroelectric plant operational equipment, such as generators, transformers, or turbines.
- Inspect equipment for leaks, diagnose malfunctions, and request repairs.
- Manipulate valves, switches, and buttons, or key commands into control panels to start semiconductor processing cycles.
- Maintain processing, production, and inspection information and reports.
- Inspect materials, components, or products for surface defects and measure circuitry, using electronic test equipment, precision measuring instruments, microscope, and standard procedures.
- Clean semiconductor wafers using cleaning equipment, such as chemical baths, automatic wafer cleaners, or blow-off wands.
- Study work orders, instructions, formulas, and processing charts to determine specifications and sequence of operations.
- Load and unload equipment chambers and transport finished product to storage or to area for further processing.
- Clean and maintain equipment, including replacing etching and rinsing solutions and cleaning bath containers and work area.
- Place semiconductor wafers in processing containers or equipment holders, using vacuum wand or tweezers.
- Set, adjust, and readjust computerized or mechanical equipment controls to regulate power level, temperature, vacuum, and rotation speed of furnace, according to crystal growing specifications.
- Etch, lap, polish, or grind wafers or ingots to form circuitry and change conductive properties, using etching, lapping, polishing, or grinding equipment.
- Load semiconductor material into furnace.
- Monitor operation and adjust controls of processing machines and equipment to produce compositions with specific electronic properties, using computer terminals.
- Count, sort, and weigh processed items.
- Calculate etching time based on thickness of material to be removed from wafers or crystals.
- Align photo mask pattern on photoresist layer, expose pattern to ultraviolet light, and develop pattern, using specialized equipment.
- Stamp, etch, or scribe identifying information on finished component according to specifications.
- Operate saw to cut remelt into sections of specified size or to cut ingots into wafers.
- Scribe or separate wafers into dice.
- Connect reactor to computer, using hand tools and power tools.
- Mount crystal ingots or wafers on blocks or plastic laminate, using special mounting devices, to facilitate their positioning in the holding fixtures of sawing, drilling, grinding or sanding equipment.
- Attach ampoule to diffusion pump to remove air from ampoule, and seal ampoule, using blowtorch.
- Measure and weigh amounts of crystal growing materials, mix and grind materials, load materials into container, and monitor processing procedures to help identify crystal growing problems.
- Locate crystal axis of ingot, and draw orientation lines on ingot, using x-ray equipment, drill, and sanding machine.
- Inspect equipment for leaks, diagnose malfunctions, and request repairs.
- Troubleshoot problems with audio-visual equipment.
- Check books in and out of the library.
- Teach library patrons basic computer skills, such as searching computerized databases.
- Review and evaluate materials, using book reviews, catalogs, faculty recommendations, and current holdings to select and order print, audio-visual, and electronic resources.
- Search standard reference materials, including online sources and the Internet, to answer patrons' reference questions.
- Keep up-to-date records of circulation and materials, maintain inventory, and correct cataloging errors.
- Analyze patrons' requests to determine needed information and assist in furnishing or locating that information.
- Supervise daily library operations, budgeting, planning, and personnel activities, such as hiring, training, scheduling, and performance evaluations.
- Plan and teach classes on topics such as information literacy, library instruction, and technology use.
- Confer with colleagues, faculty, and community members and organizations to conduct informational programs, make collection decisions, and determine library services to offer.
- Code, classify, and catalog books, publications, films, audio-visual aids, and other library materials, based on subject matter or standard library classification systems.
- Respond to customer complaints, taking action as necessary.
- Plan and deliver client-centered programs and services, such as special services for corporate clients, storytelling for children, newsletters, or programs for special groups.
- Explain use of library facilities, resources, equipment, and services, and provide information about library policies.
- Locate unusual or unique information in response to specific requests.
- Develop library policies and procedures.
- Evaluate materials to determine outdated or unused items to be discarded.
- Direct and train library staff in duties, such as receiving, shelving, researching, cataloging, and equipment use.
- Develop, maintain, and troubleshoot information access aids, such as databases, annotated bibliographies, Web pages, electronic pathfinders, software programs, and online tutorials.
- Engage in professional development activities, such as taking continuing education classes and attending or participating in conferences, workshops, professional meetings, and associations.
- Compile lists of books, periodicals, articles, and audio-visual materials on particular subjects.
- Confer with teachers to select course materials and to determine which training aids are best suited to particular grade levels.
- Evaluate vendor products and performance, negotiate contracts, and place orders.
- Arrange for interlibrary loans of materials not available in a particular library.
- Represent library or institution on internal and external committees.
- Set up, adjust, and operate audio-visual equipment, such as cameras, film and slide projectors, and recording equipment, for meetings, events, classes, seminars, and video conferences.
- Assemble and arrange display materials.
- Maintain inventory of audio-visual equipment.
- Maintain hardware and software, including computers, media equipment, scanners, color copiers, and color laser printers.
- Train faculty and media staff on the use of software and audio-visual equipment.
- Troubleshoot problems with audio-visual equipment.
